public class RegexCompletionQuery extends CompletionQuery
CompletionQuery
which takes a regular expression
as the prefix of the query term.
Example usage of querying a prefix of 'sug' and 'sub' as a regular expression against a suggest field 'suggest_field':
CompletionQuery query = new RegexCompletionQuery(new Term("suggest_field", "su[g|b]"));
See RegExp
for the supported regular expression
syntax
Constructor and Description |
---|
RegexCompletionQuery(Term term)
Calls
RegexCompletionQuery(Term, BitsProducer)
with no filter |
RegexCompletionQuery(Term term,
BitsProducer filter)
Calls
RegexCompletionQuery(Term, int, int, BitsProducer)
enabling all optional regex syntax and maxDeterminizedStates of
|
RegexCompletionQuery(Term term,
int flags,
int maxDeterminizedStates)
Calls
RegexCompletionQuery(Term, int, int, BitsProducer)
with no filter |
RegexCompletionQuery(Term term,
int flags,
int maxDeterminizedStates,
BitsProducer filter)
Constructs a regular expression completion query
|
Modifier and Type | Method and Description |
---|---|
Weight |
createWeight(IndexSearcher searcher,
boolean needsScores,
float boost)
Expert: Constructs an appropriate Weight implementation for this query.
|
boolean |
equals(java.lang.Object o)
Override and implement query instance equivalence properly in a subclass.
|
int |
getFlags()
Get the regex flags
|
int |
getMaxDeterminizedStates()
Get the maximum number of states permitted in the determinized automaton
|
int |
hashCode()
Override and implement query hash code properly in a subclass.
|
getField, getFilter, getTerm, rewrite, toString
classHash, sameClassAs, toString
public RegexCompletionQuery(Term term)
RegexCompletionQuery(Term, BitsProducer)
with no filterpublic RegexCompletionQuery(Term term, BitsProducer filter)
RegexCompletionQuery(Term, int, int, BitsProducer)
enabling all optional regex syntax and maxDeterminizedStates
of
public RegexCompletionQuery(Term term, int flags, int maxDeterminizedStates)
RegexCompletionQuery(Term, int, int, BitsProducer)
with no filterpublic RegexCompletionQuery(Term term, int flags, int maxDeterminizedStates, BitsProducer filter)
term
- query is run against Term.field()
and Term.text()
is interpreted as a regular expressionflags
- used as syntax_flag in RegExp.RegExp(String, int)
maxDeterminizedStates
- used in RegExp.toAutomaton(int)
filter
- used to query on a sub set of documentspublic Weight createWeight(IndexSearcher searcher, boolean needsScores, float boost) throws java.io.IOException
Query
Only implemented by primitive queries, which re-write to themselves.
createWeight
in class Query
needsScores
- True if document scores (Scorer.score()
) are needed.boost
- The boost that is propagated by the parent queries.java.io.IOException
public int getFlags()
public int getMaxDeterminizedStates()
public boolean equals(java.lang.Object o)
Query
QueryCache
works properly.
Typically a query will be equal to another only if it's an instance of
the same class and its document-filtering properties are identical that other
instance. Utility methods are provided for certain repetitive code.equals
in class Query
Query.sameClassAs(Object)
,
Query.classHash()
public int hashCode()
Query
QueryCache
works properly.hashCode
in class Query
Query.equals(Object)
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